付合う (tsukiau) conjugation
to associate with, to keep company with, to get on with
付合う (つきあう, tsukiau) is a godan verb. Godan verbs change their final kana up and down its column of the kana chart — the a-row for negatives, the i-row before ます, the e-row for potential and ば. Every form below is tappable — hear it, then say it back.
Conjugation table
| Form | Plain (casual) | Polite (~ます) | When you use it |
|---|---|---|---|
| Dictionary / plain | 付合う tsukiau | 付合います tsukiaimasu | The form you look up. Also the casual present and future. |
| Plain negative | 付合わない tsukiawanai | 付合いません tsukiaimasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 付合った tsukiatta | 付合いました tsukiaimashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 付合わなかった tsukiawanakatta | 付合いませんでした tsukiaimasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 付合って tsukiatte | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 付合っている tsukiatteiru | 付合っています tsukiatteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 付合いたい tsukiaitai | 付合いたいです tsukiaitaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 付合おう tsukiaou | 付合いましょう tsukiaimashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 付合える tsukiaeru | 付合えます tsukiaemasu | “can ~”. What you could do; the object often takes が. |
| Passive | 付合われる tsukiawareru | 付合われます tsukiawaremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 付合わせる tsukiawaseru | 付合わせます tsukiawasemasu | Make or let someone do it. |
| Causative-passive | 付合わされる tsukiawasareru | 付合わされます tsukiawasaremasu | Be made to do it — the long one. |
| Imperative | 付合え tsukiae | 付合ってください tsukiattekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 付合うな tsukiauna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 付合えば tsukiaeba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 付合ったら tsukiattara | — | “if / when ~”. The everyday conditional. |
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Why it conjugates this way
Godan verbs change their final kana up and down its column of the kana chart — the a-row for negatives, the i-row before ます, the e-row for potential and ば.
See the full rules on the verb conjugation guide.